Lee Jooheon (Born October 6, 1994) is a Korean rapper and songwriter who is well known as a member of K-Pop group MONSTA X. He was born in Daegu, but spent most of his life in Seoul, South Korea.

He participated in 2014 reality show NO.MERCY, which was held so that Starship Entertainment could choose members to debut in their newest boy group. Due to his strong performances and rapping abilities, he frequently placed first on the show and therefore earned a spot in the group, later named MONSTA X.

In addition to group activities, Jooheon frequently releases solo work. One of his first solo releases after debuting with MONSTA X was “Get Low” featuring fellow rapper Madclown. In 2018, he released mixtape [DWTD], which gained popularity with songs “RED CARPET” and “RUNAWAY”.

In 2020, he released mixtape [PSYCHE].